Pulverizer.



G. A. DREISBACH.

PULVEIHZER.

APPLICATION FILED JUL-Y 11,1013.

Patented Nov. 24.. 1914.

0 O c O O 0 O o 0 o 0 O o 0 O D D O O o 9 o o 071 o 0 O N o o o o o oIHE NORRIS PETERS CO1. PHOTO-LITHO. WASHINGION. n. C

O. A. DREISBACH. P'ULVERIZBR.

APPLICATION FILED JULY 11, 1918.

1 1 1 8,846, Patented NOV. 24, 1914.

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Mm Mm CHARLES A. DREISBACHQ NEl V HAVEN,CONNEC'J ICT JT.

IPULVERIZER.

Specification of Letters Patent.

Patented Nov. 24, 1914.

Application filed July 11, 1913. Serial No. "778,506.

To all whom it may concern:

Be it known that I, CHARLES A. Dams BACH, a citizen of the United Statesof America, and residing at New Haven, in the county of New Haven andState of Con necticut, have invented a certain new and usefulImprovement in Pulverizers, of which.

the following is a specification.

My invention relates to pulverizing apparatus and particularly to anapparatus adapted to crush slag cinder-s for the purpose of recoveringtherefrom their metal components.

In the accompanying drawings, Figure 1 is a broken front eleyation of anapparatus in which my apparatus is embodied in one form; F ig. is abroken section on line 2-2, Fig. 1 ;Fig. 3 is a section on line 3-3,Fig. 1; Fig. & is an elevation ofa f In operating blast furnaces priorto castingit is common practice to pour off theslag from the melt ontothe floor of the casting chamber. is impossible to remove the slag inthis manner with such nicety that some metal is not carried withit ithas consequently become common practice to gather the slag, grind itandseparate themetal from the slag for reuse. The customary apparatusemployed for this purpose is a rolling barrel containing a crushing ballor cylinder which rolls freely in the barrel and pulverizes the slagcinder which is dumped in the bottom of the barrel. This action, Whilesufliciently effective, is very hard 011 tion that it deflects thematerial fromthe placement. In the present construction the crushing 9fthe slag is accomplished rolls held out of contact with the barrel andto which the slag is fed by the rotation of the latter. i

In the form here shown the present a paratuscomprises a pair oi uprights10, each carrying a circular head plate 11 forming a stationary barrelend. The barrel 12 is pro-f vide d with external annulai' flanges whichrest on rollers14 freelyiournaled in adjust able bearings 15 mounted onthe frame 10. J ou'rnaledin the stationary heads 11, I pro: vide aliyeshaft l fSTcarryin the central crushing 011 17 whichfis iie ea thereto.M n e Oil O t sud f th a ter is a l ge driving gear wheel 18 whichneshes "with the pinion 19 keyed to the 29 of the fast and loose pulleys21. pinion 22 onthe shaft 16 meshes with an *idler' 23 the idler 24 tothe internal gear 25 on the roll bearing flange 13, at one end of thebarrel. It is thus seen that the crushing roll 17 and the barrel 12 areboth positively driven from the shaft 16. Cooperating with the crushingroll 17 I provide two additional crushing rolls 26 and 27 which bear bygravity against the roll 17 and are guided in the slot bearings 28 and29 respectively on the stationaryheadsof the barrel.

An opening 30 at one end of the barrel permits the slag cinderto be fedinto the interior thereof. Iprefer to provide a feed chute31, pivoted at32 to the stationary head 11 and i'etained in thepositionin Fig. 1

during the feed of slag to the barrel, bythe latch 33 on the spindle 3 1of the pivoted apron 35. the cinder shoveled into chute 31, itfallsjtothe bottom of the barrel and. is carried iip the pallets 3dwhich discharge gravity upon the apron 35, the latter being so arrangedas t guide the material betivjeenthe crushing rolls 17 and 2d where itreceives its first reduction in diameter 'and thcnpasses between therolls 17 and 27where it receives its second reduc: tion in diameter andfalls to the bottom of thebarrel. The periphery of the barrel isperforated as at 37 to permitthe small par. t k /9f r 'l l s 9 WSS t eugin the water -trough'38 into which the lower portion of the drum dips.Astrcam of water from a pipe BQconstantly circulates through the'trough38 and carries off at the overflow 4 h liehtva tl th t nde ass w ichhave passed through the screen-like cles of the inass, which contain themetal,

to the hottoin or the trough and may aked i bthiyise su tab y wri hdra ltme t i els; When a given quantity 9f cinder has been suflicientlyground and is desired to empty he um f Whateve r ain ther t apr 'n 3hswung over means of the handle 41 to the position indicated in dottedines Fig 3-. I thi Pos ti n s c material s s b e ieh u b th pe 36 is defiected not to the ro llers 1? and 26, but to the tetie hute 4-2 Wit inthe barrel an e! w ic he am n 5 normal e The bt m ti' chute is e i edwnward a ciiute 3 1; ontherele aseof the catch shines down by a ena t heeb tian team stea teas re a hi giiids themateriahto the swingingposition it forms a continuation of the stationary chute 42 and suchmaterial as is still in the barrel is discharged through the chute 42and feed chute 31.

The operation of the apparatus is easily understood. Upon the shiftingof the'driying belt to the live pulley 21, pinion 19 is rotated, therebydriving the gear 18 and its shaf 16. This sets in motion not only thecrushing roll 17 which is keyed to the shaft, but also the train ofgears 22, 23-, 24 through which the drum is driven. The rolls 26, 27 arerotated by reason of their frictional contact with the roll 17. As thecinder is fed into the drum through the hopper 31 (now in the positionshown in Fig. 1) it is carried up by the pallets 36' and dropped uponthe apron which discharges to the crushing rolls. Such material as asingle passage through the rolls is not sufiicient to reduce to adiameter small enough to pass out through the reticulated periphery ofthe drum, is carried up, by the pallets and again discharged to thecrushing roll. The fines entering the trough 88 either sink by gravityto the bottom or are carried out by the overflow at 39. Inasmuch as allthe material falls into the water in which the lower portion of the drumdips, the grinding is done wet and the usual dust of the crusher isavoided. To discharge the drum of metal which has been thoroughlycleaned from slag and clinkers, the handle 41 is turned down to throwthe apron into such position that it deflects the material from thepallets to the discharge chute 42, the hopper 31 being new in positionto form a continuation thereof discharging outside the barrel. Theapparatus may also be used for dry grinding. if preferred. and for suchuse I may provide a hole 43 in one of the heads to receive a dust flueleading to a suitable exhauster not shown), by means of which the dustis drawn off as fast as made by the rolls. Again, the rolls 2627 may bespring-pressedagainst the live roll 17 instead of bearing against thesame solely by gra ity.- Various other modifications will readil suggestthemselves and the construction shown'is'to be regarded merely as anexemplary embodiment of my invention.

I claim as my invention 1. A crushing apparatus of the type desc ibed.compr sing a rotary barrel, a pluralitv of crushing rolls in frictionalcontact with each other arranged within the barrel, a live shaft keyedto one of said rolls the other rol s being idlers. gearing for drivingsaid shaft and gearing between said shaft and barrel for rotating thelatter, in combination with means ca ried on the inner face of thebarrel fo lifting material f om the lower po tion of t e ba el andfeeding the same to the crushing rolls;

2. A crushing apparatus of the type described, comprising a rotarybarrel, a live crushing roll centrally supported Within the latter, apair of idler crushing rolls free to rise above the same and bearing bygravity in frictional contact with said live roll, and means carried onthe inner periphery of the barrel for feeding material from the bottomof the drum to the crushing rolls.

3. A crushing apparatus of the type described, comprising a rotarybarrel, crushing rolls arranged in the upper portion of the barrel andout of contact with the latter, one end of the barrel being apertured toadmit material to the lower portion thereof, means on the inner face ofthe barrel for lifting said material to the upper portion of the barreland discharging it to said crushing rolls, a pivoted apron for directingsaid material to the crushing rolls, a stationary discharge chutenormally covered by said apron, and means for swinging said apron todirect to said dis charge chute the material "lifted by the barrel. j

4. A crushing apparatus of the type described, comprising a rotarybarrel, crushing rolls arranged in the upper portion of the barrel outof contact with the latter, one end of the barrel being apertured toadmit material to the lower portion thereof, means on the inner face ofthe barrel for lifting said material to the upper portion of the barreland discharging it to the crushing rolls, a pivotedapron for directingsaid material to the crushing rolls, a stationary discharge chutenormally covered by said apron, and means for swinging said apron todirect to said discharge chute the material lifted by the barrel,together with a pivoted feed chute directing the material through theaperture in the end of the barrel during the feed to the latter andadapted to be swung into the barrel to coiiperate with the stationarydischarge chute therein to lead material from the barrel, substantiallyas described.

5. In crushing apparatus of the type described, a rotary barrelapertured at one end to admit material to the interior thereof, apivoted feed chute for, feeding material through said aperture, means onthe inner i rial, crushing rolls within the barrel, a pivoted apron forguiding said lifted material to the rolls, a stationary discharge chutewithin the barrel and means for swinging said apron periphery of thebarrel for lifting the mateand feed chute on their pivots torespecscribed, comprising arotary barrel, a crushing roll axiallyarranged therein, means for poslti ely rotatlng sald roll, an idlercrushing roll resting upon said driven roll and free to rise therefrom,the axis of said idler roll being arranged to one side of a planepassing vertically through the axis of the driven roll, an apronarranged on the other side of said axis and serving to direct materialto the bite of thesaid rolls, means for lifting material from the bottomof the barrel and discharging the same upon said apron together withmeans to rotate the barrel. 1

7. A crushing apparatus of the type described, comprising a rotarybarrel, a crush ing roll axially arranged therein, means for positivelyrotating said roll, a plurality of idler crushing rolls resting againstsaid driven roll and free to rise therefrom, the axes of said idlersbeing arranged to one side of a plane passing Vertically through theaxis of the driven roll, an apron arranged onthe other side of said axisand serving to direct material to the bite of said rolls, means forlifting material from the.

8.. A crushing apparatus comprising a rotary barrel aperturedto admit acharge to the bottom thereof, crushing rolls arranged within the barrel,means for lifting the charge from the bottom of the barrel, and meansWithin the barrel for either directing the lifted material to thecrushing rolls or discharging it from the barrel.

In testimony whereof I have signed my name to this specification, in thepresence of tWo subscribing Witnesses.

CHARLES A. DREISBAOH.

Witnesses JOHN DREISBAGH, MATTHEW C. DALY.

Copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents, Washington, 10.0."

